Olympic strike: Serwotka says action is "last resort"
The leader of a union representing thousands of Home Office staff, has defended plans to call a strike next Thursday - on the eve of the Olympics.
Airport immigration workers will be among those walking out in a dispute over jobs and pay, and people arriving at airports for the games are likely to be affected.
The Home Secretary, Theresa May, said the strike was shameful and promised to make contingency arrangements.
But Mark Serwotka, who's general secretary of the PCS union, said that the action had been taken only as a last resort, because of the government's unwillingness to negotiate.